Log Levels

The Application Server has many log levels that can be set in the Administration GUI (FINEST, FINER, FINE, CONFIG, INFO, WARNING, SEVERE, ALERT, and FATAL). All messages are logged when the log
level is set to FINEST and only serious error messages appear if
the log level is set to FATAL.

Note that the more detailed log levels (FINEST, FINER, FINE) can generate high volumes of log information
for certain events, which may make it appear at first glance that there is an error
condition when in fact there is not.

All messages with a log level less than the default level of INFO (FINEST, FINER, FINE, and CONFIG) provide information related to debugging and must be specifically
enabled. Instructions for doing this are contained in the Sun Java System Application Server Administrator's Guide.

In addition to the standard JDK log levels, the Application Server has added log levels designed to map more
intuitively to the Application Server log file (server.log) and to tightly
integrate with Solaris. The log levels ALERT and FATAL are specific to the Application Server and are not implemented in the JDK1.4
logging API.

Note –

For information on the event log mechanism
used in the Microsoft Windows operating environment, refer to the Windows help system
index using the keywords Event Logging. If you choose to send logs to the Windows server.log file, only messages with a log level
of INFO, WARNING, SEVERE, ALERT, or FATAL are logged to the Windows Event Log.